Academic Journal
Green Synthesis of the Effectively Environmentally Safe Metakaolin-Based Geopolymer for the Removal of Hazardous Industrial Wastes Using Two Different Methods
| العنوان: | Green Synthesis of the Effectively Environmentally Safe Metakaolin-Based Geopolymer for the Removal of Hazardous Industrial Wastes Using Two Different Methods |
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| المؤلفون: | Doaa A. Ahmed, Morsy A. El-Apasery, Amal A. Aly, Shereen M. Ragai |
| المصدر: | Polymers, Vol 15, Iss 13, p 2865 (2023) |
| بيانات النشر: | MDPI AG |
| سنة النشر: | 2023 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | reactive black 5 dye, Cd 2+, Pb 2+, solidification, adsorption, geopolymer cement, Organic chemistry, QD241-441 |
| الوصف: | Untreated wastewater pollution causes environmental degradation, health issues, and ecosystem disruption. Geopolymers offer sustainable, eco-friendly alternatives to traditional cement-based materials for wastewater solidification and removal. In this study, we investigate how wastewater containing organic and inorganic pollutants can be removed using geopolymer mixes based on metakaolin incorporation with cement kiln dust as an eco-friendly material. The present investigation compares the efficacy of two different techniques (solidification and adsorption) for reducing dye contaminants and heavy metals from wastewater using a geopolymer based on metakaolin incorporation with cement kiln dust. This study investigated the adsorption capacity of a geopolymer based on metakaolin incorporating two different ratios (20% and 40% by weight) of cement kiln dust (MC1 and MC2) for the reactive black 5 dyeing bath effluent (RBD) only and in a combination of 1200 mg/L of Pb 2+ and Cd 2+ , each separately, in aqueous solutions under different adsorption parameters. The results of the adsorption technique for the two prepared geopolymer mixes, MC1 and MC2, show that MC1 has a higher adsorption activity than MC2 toward the reactive black 5 dyeing bath effluent both alone and in combination with Pb 2+ and Cd 2+ ions separately. The study also looked at using MC1 mix to stabilize and solidify both the dyeing bath effluent alone and its combination with 1200 mg/L of each heavy metal individually inside the geopolymer matrix for different time intervals up to 60 days of water curing at room temperature. The geopolymer matrix formed during the process was analyzed using FTIR, SEM, and XRD techniques to examine the phases of hydration products formed. The results showed that MC1 effectively adsorbs, stabilizes, and solidifies the dying bath effluent for up to 60 days, even with high heavy metal concentrations. On the other hand, geopolymer mixes showed an increase in mechanical properties when hydration time was increased to 60 ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2073-4360 |
| Relation: | https://www.mdpi.com/2073-4360/15/13/2865; https://doaj.org/toc/2073-4360; https://doaj.org/article/b7748156aadd4a7b85f5b79a45209b39 |
| DOI: | 10.3390/polym15132865 |
| الاتاحة: | https://doi.org/10.3390/polym15132865 https://doaj.org/article/b7748156aadd4a7b85f5b79a45209b39 |
| رقم الانضمام: | edsbas.2DF119E6 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 20734360 |
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| DOI: | 10.3390/polym15132865 |